Driving- collar



Patented Apr. l0, l923.

DRIVING COLLAR.

To all whom it may concern: yBe it known that I, Jenn H. REEDY, a citizen of the United States, and a resident of the city of Hamilton, in the county of Butler and State of Ohio, have invented a certain new and useful Driving Collar, of which the following is a full, clear, and eX- act description, reference being had tothe drawings forming part of this specification. A`My Jinvention relates to clutch collars, to'beI used on' shafting, for automatically grasping the desired shaftsin a non-rotatable manner.

,In paper winding machines having driven shafts over which the paper is to be wound, itis vcustomary to employ suitable sleeves or cores, ordinarily of metal, slipped over the' windingfshafts, and to lock these sleeves totheshafts by means of acollar or collars p keyed 'into the shafts and employing set screws and the like to hold them in place. The use of set screws isalways dangerous and is the cause of a great many of the accidentsoinwin'ding machines for paper or the like, due to ktheir catching the clothing and pulling the operator into the machinery. v`The diflicultywith doing away with set screws and keys is that the strain to be taken by the collars is so great as to renderthe ordinary form. of clamping collar entirely inadequate, so that my object is vto provide a structure which will withstand the requisite working strains, and at the same time will be ,simple and effective in operation, and which requires no key Winder shaft.

I accomplish my objects by that certain construction and arrangement of parts to be hereinafter more specifically pointed 'out 40, andclaiined. Y In the drawings, Y Figure l isan end elevation of the device. Figure 2 is a longitudinal section thereof. ',.Eigure 3 is1 a. view illustrating the device in use, and in fa more compound form.

Figure liis alongitudinal section showing the frame portions only of the parts shown' f in Figurev Qtbuty with an additional thrust resisting portion formed in connection with theV colla-r, said additional form being the one shownin Figure 3.

Thedevice ismade up in its simplest form of .an inner andtworoutermembers, and two or key-way on thek cage plates for a set of grasping rollers,i`said inner and outer members being made `ofa size to loosely fit a shaft ofthe desired size'.- f The linner member 1,-in .theform selected for illustration inthe drawings, is roughly triangular in shape at theV outside and is cut on the Ainside'with three cam faces "2,

terminating in shoulders 8, and tapering'out-y wardlyffroinvthe Saidysho'uld'ers.. VL 'l The two outer members 4 are ofthe .same outer shape and are fastened together with the inner member by means ofscrewsaor bolts 5. The two outer members arey formed internallyinto annular form, and yarecut withl vcam shaped slots 6, three in this particular arrangement. u c

Set between the inner vmember and the tw outer members are annular plates 7 which are loosely held sothat they can slide in a rotary manner, `due to cutaway ledges 8, formed on the inner member. The plates 7 have closed slots 9 formed therein, `in;a di rection radial to the center of the plates;` i

Three spirallyA grooved hard metal rollers l0, having spindles l1, 11', arev mounted with their spindles extendingthrough theslots 9, and thence into the cam'shaped lslots 6. The periplieries of the rollers ride on the cam faces 2 of the inner memberl.

With the` device constructed as vabove se forth, the two plates 7 form a freely movling cage for the gripping rollers 10 and the whole collar device can be slipped'over a shaft, and will turn freely thereon vin one direction, but in the other direction a movement of the shaft with relation 'to the collar will-cause the rollers to ride'up on the cam forrieca-- JOHN H. REEDY, 0F HAMILTON, OHIO.

in number grooves 2, thereby clamping firmly "andbit` v ing into the shaft. Y, o Y Lugs l2 are formed on the outer members of the collar for engagement withwhat-v ever element is to be revolved bythe' shaft. For examplein the casefof a driven shaftfl, over which is, slipped the-sleeve for cor,e:,.14 for rolling up paper 15,the core will have in engagement therewith a collar-16,'loo'se.on

the shaft. This engagement may-.be b'yribs onthe collar andslots inthe core, or,l otherwise as.desirecl. `'lhecollar .16 has :notches thereinv for receiving the lugs 12 of `one of the outer collar "members of thelnoveldevicer described, and' thus-the new clamping ollai will .drive the coreamlwnd; upi-thepaper;

on the same, after which it can be quickly and easily removed and the core slipped off.

As shown in Figures 3 and 4, one of the outer collar members may be formed withra sleeve portion 17, of larger internal diameter than the shaft to be engaged. This sleeve portion carries a controllingring 1,8 threaded thereon, which controlling ring lhas secured thereto an annular plate 19. v l y,

The annular plate engages rotatably a groove 2O formed in a...bushing 21, of approximately the diameter of the shaft internally. Thesleeve is grooved with slanting based grooves 22, on which ride small spirally cut rollers 23. The rollers are held in place :by means of the bushing, which is movable longitudinally of the1 sleeve,- by means of the controlling ring and has slots 28a cut in .its forward end, the outside edges of whichare cut away througha limited space as at 23h to receive the spindles 24`of the 1Vrollers. f

.[By yadjusting' the controlling ring, the

' inner bushing. can be forced forwardly through the sleeve, thereby forcingthe rollers-to ride upv onk the slanting'groove bases andfforcing them into engagement with such shaft as is lying within the device. When the `rollersbite intorthe shaft there will'be a, thrusty receiving clamping action oni the shaft, which will be increasedin force upon ai tendency to. slip, due to the capability of the .rollersto move along with their spin 'f dles inthe. cut-away portions 23 behind the to' exclude. from the scope thereof the many modifications which would amount'mechanically to the same thing, but on thecontrary I-desirevmy claims that follow to1"be'con strued with the full benefit ofthe doctrine i of' equivalents.v

Havingd thusI described, jmy invention, what Irclaim as new and desire to secure by Letters Patent, is l Ina driving collar for automatically clutching ashaft, the combination of an elementeforengaging a shaft formed with rollerlicleara'nce. within it, comprising' a series-of circumferential camo grooves, a series `of'rollers set into said grooves andt riding therein, and plates `independe`ntly movableffwithrelation tothe sh'aft'and the" engaging element, for retaining the rollers in position and serving to cause their movement as a unit, said rollers constituting the sole grasping element between the shaft and the engaging element. y

2. In a driving collar for shafts, the combination 'with a shaft engaging annular means, said means having a series of internal ycam grooves, a series of rollers for the said grooves, and a cage loosely engaged with the shaft engaging means and acting as a retainer and spacer of the rollers, said rollers being adapted, upon 4revolutir'jn of-a shaft with reference to fthe shaft engaging means, to ltravel in the cam grooves into sa position of increasinglytight Egrip on such shaft and said cage being formed with slots for lpermitting l movement of the rollers radially of the shaft.

3. In a driving collar for shafts thecombination with an internal member, andtwo exftern'al members, ysaid internal member having itsinternal face cutwith circumferential` ly yextending grooves having an inclined base, a series of rollers having spindles, cam shaped slots in the external members for said spindles, and cage means vrotatablymounted intermediate the external members "land engaging loosely the spindles of the rollers and spacing them apart, said yrollers having rughened 'peripheriesfa'nd adapte'dvto ride in the v'grooveson the bases thereof, for'the purpose described and said Y cage being formed with slots for permitting' movement ofthe rollers radially of they shaft.

ljln a' driving @fallar forshafts, the icombination with ya shaft Iengaging annular means,l said means 5having afseri'esof 'internal camgroo'ves, Ya series ofrollersy for the said grooves, and a cage loosely engaged withthe shaft engaging'means and acting as a retainer' and spacer of the rollersfsaid cage'being'formed' with slots for permittingA movement 'of I'the rollers' radially of the sliaft,"said rollers being adapted upon yr'evolution of'a shaft with"refer`ence-'to v'the sh'a'ft vengaging means,to travel infthecam grooves into a position of increasingly tight grip on such shaft, and"s`aid` shafty engaging annular'means having lugs thereoniextending' longitudinally `'of :the said means,

and adapted for engagement of a' member to be revolved by the shaft. l 5. Thecombin ation 1n adeviceof th'e'characteixdescribed' of means toengaoethe "shaft,

said means comprising in part roughened v rollers and cam means engaging they rollers to force them inwaidlyi'of the shaft irgagf ing means upon relative Vrotary-niotion I*of the shaftand' the means, andiA additional shaft engaging meansf Vunitary 7 with the Al'first mentioned engaging means', said additional engaging means comprisingin "part roughened rollers'and cam means'eng'agingithe said 'rollers 'tofoiee'themfinto the*sl'iaftv upon relative longitudinal movement of the Within the said clearance and kengage the `10 l shaft and the said additional engaging cams, and cagemeans for retaining said v means. `rougliened elements in interspaced relation 6. In a driving collar for automatically to cause simultaneous `movement thereof,` I clutching a shaft the combination of an elesaid cage adapted to permit e movement ment for engaging a shaft formed With a radially of the shaft of the roughened meml5 circumferential clearance Within it comprisbers. f ing a series of circumferential cams, a v v series of roughened elements adapted to lie l y JOHN H. REEDY.v 

